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Category: Living in Korea

  • No Hot Water in a Korean Apartment? 5 Things to Check First

    No Hot Water in a Korean Apartment? 5 Things to Check First

    You turn the hot water tap, and nothing but cold water comes out. Having no hot water in a Korean apartment is especially frustrating in winter, when a cold shower is the last thing you want.

    The good news is that a few quick checks can often solve the problem, or at least tell you who to call. This guide covers the situation where the boiler has power but the hot water simply isn’t coming.

    If your boiler won’t turn on at all, that’s a different issue. Read our guide, Boiler Won’t Turn On in Korea: What to Check Before Calling Service, instead.

    First, What Kind of Hot Water Problem Do You Have?

    Before you do anything else, work out exactly what’s happening. The pattern you see points to where the problem is.

    What you see What to suspect first
    Neither cold nor hot water comes out Water supply, the water meter, or frozen incoming pipes
    No water from the hot side only Frozen hot-water or incoming pipes
    Water comes out but stays cold Settings, flow, or an error code on the controller
    Only one tap has no hot water That tap, its mixer valve, or the pipe to it

    Try turning on the bathroom and kitchen taps at the same time. A problem across the whole home usually points to the heating system itself. A problem at a single tap points to that tap.

    5 Things to Check When You Have No Hot Water in a Korean Apartment

    Run through these five checks before you pick up the phone. They take only a few minutes each.

    1. Check the hot water setting on the controller

    Look at your wall controller first. Make sure hot water (온수) is switched on, and check that the hot water temperature isn’t set too low.

    Controllers differ by boiler maker and model, so follow your model’s manual. According to the Korea Experience guide, you’ll commonly see these terms: 난방 (heating), 온수 (hot water), 온수전용 (hot water only, which turns off floor heating while keeping tap hot water running), 외출 (away mode), and 예약 (timer). If the panel itself still confuses you, our guide to the Korean ondol boiler panel breaks down what each button does.

    2. Try another tap

    If only the shower runs cold, check the kitchen sink and the bathroom sink too. If those give hot water fine, the shower mixer valve is more likely the culprit than the boiler itself.

    3. Adjust how much water is flowing

    A very weak stream, or water that stays lukewarm, can sometimes be fixed just by changing the flow. Turn the tap up or down slowly and watch what happens. Some boilers behave differently depending on how much water passes through.

    4. Look for an error code

    Check the controller for a number or an error symbol. Write it down along with the boiler’s model name, since the same number can mean different things depending on the maker and model. Your model’s official manual is the place to confirm what it means.

    5. Think about frozen pipes in cold weather

    If temperatures have stayed below freezing, or your pipes run somewhere exposed, freezing is a real possibility. A common sign is cold water running fine while nothing comes from the hot side.

    Pipes connected to the boiler can freeze in winter and stop hot water from reaching the tap. If you suspect this, check your boiler maker’s official thawing method first. Kiturami, for example, explains thawing a frozen pipe slowly using a warm towel at about 50-60°C. If that doesn’t feel safe to do, or you spot a leak, call a professional instead.

    • Do not pour boiling water directly on the pipe
    • Do not heat it with a torch or lighter
    • Do not force a frozen valve
    • Do not take the boiler apart yourself

    For a longer-term fix, our winter checklist for preventing frozen pipes in Korea covers how to stop this from happening again.

    Individual Boiler or Building Heating: Who Should You Contact?

    Korean apartments get heat in different ways. The Seoul Metropolitan Government’s 2023 release groups apartment heating into central heating (중앙난방), district heating (지역난방), and individual heating (개별난방).

    Which type you have decides who you should call, so check your lease or ask your landlord or the building’s management office (관리사무소) if you’re unsure.

    Your situation Who to contact first
    You have your own boiler in your unit The boiler maker’s A/S center. The Seoul release says boiler faults and abnormal operation go to the maker’s A/S center, as usual.
    Heat comes from a central or district system, or you aren’t sure Your landlord or management office. Seoul Energy Corporation’s guide says to contact the management office right away if you suspect a problem with the heat meter (열량계).

    How hot water is produced differs by building. If you’re not sure how yours works, ask your landlord or the management office rather than guessing.

    Korean Phrases for Your Landlord or Management Office

    A short, clear message tends to get a faster answer. Feel free to copy these.

    English Korean
    There is no hot water. 온수가 안 나와요.
    There is no hot water in the whole house. 집 전체에서 온수가 안 나와요.
    Only the shower has no hot water. 샤워기에서만 온수가 안 나와요.
    An error code is showing on the controller. 온도조절기에 오류 표시가 떠요.
    The pipe might be frozen. 배관이 얼었을 수도 있어요.
    Could you check the boiler? 보일러 좀 확인해 주실 수 있을까요?
    Could you tell me the boiler’s A/S number? 보일러 A/S 번호를 알려 주실 수 있을까요?

    Example message: 안녕하세요. 집 전체에서 온수가 안 나와요. 보일러 좀 확인해 주실 수 있을까요?

    Try to mention four things: the boiler’s model name, the symptom, whether it’s heating or hot water that’s affected, and whether you suspect a frozen or leaking pipe.

    When to Call A/S and What Not to Do

    Some situations call for a professional rather than more DIY troubleshooting. Contact the manufacturer’s A/S center or your landlord in these cases:

    • An error code keeps coming back
    • Water leaks from the boiler or the pipes
    • You strongly suspect frozen pipes
    • No tap gives hot water and the basic checks didn’t help

    If you ever smell gas, don’t touch electrical switches or use any flame. Move to a safe place right away and report it to 119 or your gas supplier. Never take the boiler or gas pipes apart yourself.

    Frequently Asked Questions

    Can the heating work while there is no hot water?

    Yes. Heating and hot water operate under different conditions, so your floor heating can run normally while hot water has a separate problem.

    If only the shower is cold, is the boiler broken?

    Not necessarily. If the sinks still give hot water, check the shower mixer valve before blaming the boiler.

    Does sudden no hot water on a cold day mean the pipes froze?

    Frozen pipes can be the cause, but other problems are possible too. Check the cold water supply and the hot water at every tap together before deciding.

    This guide was compiled on October 26, 2026 from the pages listed under Official Sources and manufacturer guidance. Boiler models and building heating systems differ, so always check your own boiler manual and ask your landlord or management office when in doubt.

    Official Sources:
    Seoul Energy Corporation, Heat Use Guide: https://www.i-se.co.kr/mass101
    Seoul Metropolitan Government, heating-efficiency inspection news release (February 9, 2023): https://mediahub.seoul.go.kr/archives/2006912
    Korea Experience, Korean Apartment Heating Controls Explained (October 12, 2026): https://koreaexperience.com/blog/korean-apartment-heating-controls-explained-safe-ways-to-understand-ondol-settin

    Photo by Raphael (Ajani Kamali Akio) on Unsplash

  • Dispose of Furniture in Korea: Fees & Pickup Guide

    Dispose of Furniture in Korea: Fees & Pickup Guide

    Getting rid of an old mattress, sofa, or desk in Korea isn’t as simple as leaving it outside your building. If you want to dispose of furniture in Korea the right way, large items almost always need a bulky waste application and a collection fee first. Nobody will just pick it up off the curb.

    Maybe you’re moving out. Maybe you’re replacing an old couch, or packing up before leaving the country. This guide explains how disposing of furniture in Korea works, using Seoul Metropolitan Government pages and district office pages. It covers Seoul only — other cities and districts set their own rules.

    What Counts as Bulky Waste in Korea?

    In Korea, bulky household waste is called daehyeong pyegimul (대형폐기물). It generally means items that cannot go into a standard household garbage bag.

    Common examples include:

    • Mattresses and bed frames
    • Sofas and armchairs
    • Desks, tables and bookshelves
    • Wardrobes and cabinets
    • Large chairs and other household furniture

    These items need their own collection arrangement. They don’t go out with ordinary household trash. For everyday garbage, food waste and recycling, see our guide, Korea Trash Sorting: A Practical Guide for Foreign Residents.

    How to Dispose of Furniture in Korea: Step by Step

    Most districts offer an online application. Details differ by district, so treat these steps as a general outline rather than an exact script.

    Step 1. Find your district office

    Search for your district name together with “대형폐기물 배출신고” (bulky waste disposal application). Residents of Jongno-gu in Seoul, for example, can use the Jongno-gu bulky waste application website.

    Official Jongno-gu bulky waste application: https://jongno.go.kr/waste/pc/web/main/main.do

    You can review the disposal instructions, check item-specific fees, and submit an application through this website.

    Step 2. Enter your item details

    Select the item type, quantity, and size where required. Add your address and the date you want it collected.

    Step 3. Pay the disposal fee

    The fee depends on your district, the item category and sometimes its dimensions. Check the charge shown on screen before you pay.

    Step 4. Attach the confirmation

    Some districts give you a disposal confirmation to print and attach. Others use a report number that you write on the item yourself. Follow your district’s instructions after payment.

    Step 5. Put the item in the designated place

    Move the item to the approved collection place at the instructed time. In an apartment complex, ask the management office where large items go.

    The Seoul Metropolitan Government’s guide for foreign residents describes the same general process: report the item, pay the fee, attach the receipt and leave it for collection.

    Why the Process Differs by District

    Seoul districts set their own bulky waste rules by local ordinance. In a November 2023 news release, the Seoul Metropolitan Government said that report and confirmation methods differ from district to district.

    It said it would encourage every district to switch from printed confirmations to a report number written on the item. It also said it was studying fee guidelines to reduce the differences between districts.

    The release doesn’t say when each district completed that change. Check which method your own district uses when you apply.

    How Much Does It Cost to Dispose of Furniture in Korea?

    Fees are usually set per item, not per bag.

    Item What Can Affect the Fee
    Mattress Size and your district’s fee category
    Sofa Number of seats and type
    Desk Size and design
    Wardrobe Dimensions and number of sections
    Bed frame Size and components
    Bookshelf Dimensions and item category

    There’s no single nationwide price. Each local government keeps its own fee schedule, so two districts may charge different amounts for similar furniture. Check the price list for your district before you apply.

    Can You Throw Away a Mattress in Korea?

    Yes. Mattresses are generally handled as bulky waste. Before you dispose of one, work through this order:

    1. Check your district’s category for mattresses.
    2. Confirm whether the mattress and the bed frame need separate applications.
    3. Pay the fee shown for that item.
    4. Attach the confirmation or write the report number as your district instructs.
    5. Put the mattress at the designated collection place on the date you chose.

    Don’t assume a mattress can go out with ordinary household waste.

    Where Should You Leave Large Furniture?

    The collection place depends on your housing type and district rules.

    Apartments (아파트)

    Ask the apartment management office (관리사무소) where large items go. Some complexes have their own rules for moving bulky items.

    Villas and studio apartments (빌라 / 원룸)

    Follow the collection place your district gives you. It may be in front of the building or at a designated waste area.

    Officetels (오피스텔)

    Check with building management first, especially if elevators or shared collection areas are involved.

    Don’t leave furniture on a sidewalk or in a shared area before checking local requirements. Items without the required confirmation, or placed outside the designated spot, may not be collected.

    Can You Skip Printing the Confirmation?

    In Jongno-gu, residents without a printer can write the payment confirmation number, item name, disposal fee, and collection location on a piece of paper and attach it to the furniture.

    Other districts may have different requirements. Always follow the instructions provided by your local district office.

    What About Refrigerators, Washing Machines and TVs?

    Large household appliances may qualify for a separate free collection service run with the Seoul Metropolitan Government.

    • Examples of eligible items: refrigerators, washing machines, air conditioners and TVs
    • Reservation by phone: 1599-0903
    • Reservation online: https://www.15990903.or.kr/
    • Not available on Sundays or during the Seollal and Chuseok holidays, according to the Seoul page

    Not every appliance is eligible, so check the service’s item list before you book.

    This free appliance collection is separate from paid bulky furniture disposal. Don’t assume a mattress or sofa qualifies for free pickup.

    Useful Korean Words for Furniture Disposal

    Korean English
    대형폐기물 Bulky waste
    대형폐기물 배출신고 Bulky waste disposal application
    수수료 Disposal fee
    배출장소 Disposal place
    배출일 Disposal date
    신고필증 Disposal confirmation
    수거 Collection
    관리사무소 Building management office

    If you’re not sure where to leave an item, ask your building manager: “대형폐기물은 어디에 버리면 되나요?” (Daehyeong pyegimureun eodie beorimyeon doenayo?), which means “Where should I put bulky waste?”

    Frequently Asked Questions

    Can I leave an old sofa outside my apartment?

    Not before you check the requirements. You generally need to register the item and pay the fee before you put it in the designated place.

    How long does furniture collection take?

    Collection times vary by district. For example, Jongno-gu states that bulky waste collection may take approximately 2–5 business days after the disposal date, excluding weekends and public holidays. Delays are possible depending on collection conditions.

    Check your district’s official schedule before placing furniture outside.

    Can foreigners apply for bulky waste collection online?

    Yes. Foreign residents can use their district’s online application where it’s available. Language options and payment methods differ, so contact your district office if you can’t finish the application.

    What happens if I leave furniture without registering it?

    Unregistered items may not be collected, and unauthorized dumping may lead to penalties. Wrong item details or an underpaid fee can also stop the collection.

    Can I give away furniture instead of throwing it away?

    Yes. If the furniture is still usable, you can give it away or sell it through a local secondhand platform. That can avoid disposal fees.

    Final Checklist Before You Dispose of Furniture in Korea

    • Confirm your district’s disposal rules.
    • Choose the correct item category and size.
    • Check and pay the fee shown.
    • Attach the confirmation or write the report number as instructed.
    • Confirm the collection place and date.
    • Keep your application details until the item is collected.

    Disposing of furniture in Korea is straightforward once you know your district’s process. The key step is checking your district’s official instructions before you move anything outside.

    This guide was compiled on October 22, 2026, from the pages listed under Official Sources below. Rules, fees and procedures differ by district and can change, so confirm with your district office before you apply.

    Official Sources

    • Seoul Metropolitan Government, Guidebook for Living in Seoul: https://english.seoul.go.kr/
    • Seoul Metropolitan Government, bulky waste disposal improvement news release (November 2, 2023): https://news.seoul.go.kr/env/archives/518262
    • Seoul Metropolitan Government, free visiting collection of large appliances (October 23, 2024): https://news.seoul.go.kr/env/archives/61846
    • Jongno-gu, Bulky Waste Application: https://jongno.go.kr/waste/pc/web/main/main.do
    • Free Waste Appliance Collection: https://www.15990903.or.kr/

    Photo by Zoshua Colah on Unsplash

  • Korean Address in English: Order, Examples & Postal Codes

    Korean Address in English: Order, Examples & Postal Codes

    A Korean address in English usually starts with the building number and road name, followed by the district, city, five-digit postal code, and country.

    For apartments, you’ll also need the building (dong) and unit (ho) numbers.

    Below, you’ll find formatting examples and a step-by-step guide to checking your address before placing an order or sending a package.

    Korean Address in English: The Basic Order

    Korea Post’s own sample reads: 33, Beobwonbuk-ro, Yeonje-gu, Busan, 47502 Rep. of KOREA. The Korean original is 부산시 연제구 법원북로 33, with postal code 47502.

    The order runs from the smallest unit to the largest. Here’s the sequence to follow.

    • Building number and road name
    • District (gu)
    • City
    • Five-digit postal code
    • Country

    Korea Post also says to write the destination city and country in capital letters. Don’t underline the country, city, or postal code.

    Road Name Address vs Lot-Number Address

    Korea has two address styles, and both can show up on the same website or delivery slip. According to the IBS Korea living guide, the road name address (도로명주소) officially started on January 1, 2014.

    The older lot-number address (지번 주소) was officially decommissioned on December 31, 2013. It is still widely used today, though.

    • Road name address: built on a street name and building number, like addresses in North America or Europe.
    • Lot-number address: built on neighborhood (dong) and lot number, with no street name.

    Use the road name address whenever you can. Korea Post notes that a lot number (번지) is written without a marker, so 141번지 becomes 141.

    How to Read the Parts of a Korean Address

    Each Korean place name ends with a short unit word. Korea Post’s guide joins that suffix to the name with a hyphen in English.

    For example, 군산시 becomes Gunsan-si, 구로구 becomes Guro-gu, and 반포동 becomes Banpo-dong.

    Road names also end in a type word. The IBS guide lists three:

    • daero (대로): a boulevard with more than eight lanes
    • ro (로): a road with 2 to 7 lanes
    • gil (길): a street for anything else

    These suffixes generally indicate different types of roads. Still, the official address should always be used as written.

    A name such as 사직로3길 is a side street off Sajik-ro. Its English form can appear in different styles, such as “Sajik-ro 3-gil” and “Sajik-ro-3-gil.” Copy the form shown by the official address search.

    Apartments: How to Write Dong and Ho

    Apartment addresses need extra care, because the dong and ho numbers must match the Korean address exactly.

    Dong (동) is the building number, and ho (호) is the unit number. The IBS guide shows that 102동 304호 can be written as “102-dong 304-ho” or simply “102-304.” Another reference gives “Apt. 102-304” and “Bldg. 102 Unit 304.”

    The IBS guide also explains the unit number pattern. In 304, the first digit is the floor, so the unit sits on the third floor. This is a common pattern, not a rule for every building.

    • Keep the building (dong) and unit (ho) numbers exactly as provided by the recipient.
    • Put them on their own line if the form has a second address line.
    • Follow the format your shop or carrier asks for.

    If you’re settling into a Korean apartment for the first time, local systems can feel unfamiliar beyond just the address. Our guide to Korean trash sorting for foreign residents covers another everyday system that trips people up early on.

    How to Find Your Postal Code for a Korean Address in English

    The official Road Name Address website, https://www.juso.go.kr  helps you check a Korean address in English using a road name, building name, or older lot-number address. You can also use the service to look up English address information and postal codes.

    Follow these steps:

    1. Search for your address. Visit Juso.go.kr and enter the Korean road name address, building name, or lot-number address.
    2. Check the correct building. Make sure the road name, building number, and location match the recipient’s address.
    3. Check the English address and postal code. Use the official English spelling and note the five-digit postal code shown for the matching address.
    4. Add apartment details. If the recipient lives in an apartment, include the building (dong) and unit (ho) numbers exactly as provided.

    You may see English addresses written with or without a comma after the building number, such as “58 Banpo-daero” and “58, Banpo-daero.”

    The Korean government’s English address formatting guidance, from the Ministry of the Interior and Safety, is a recommendation. It isn’t a single mandatory format for every situation.

    The safest approach is to use the English address provided by the official address service. Then follow the shipping carrier’s requirements on top of that.

    There are also physical clues worth checking. The IBS guide says apartments might display the postal code near the mailboxes or inside the elevator on the inner doors.

    Always verify the complete address and postal code before submitting an order or sending a package.

    Address Examples

    The examples below demonstrate common formats for a Korean address in English. Always verify the actual address and postal code before shipping. The recipient in the second example is a sample name, not a real person.

    Type Korean English
    Building (Korea Post sample) 부산시 연제구 법원북로 33, 47502 33, Beobwonbuk-ro, Yeonje-gu, Busan, 47502 Rep. of KOREA
    Apartment (format example) 서울 종로구 사직로3길 23, 102동 304호, 30174 Gildong Hong, 102-dong 304-ho, 23 Sajik-ro 3-gil, Jongno-gu, Seoul 30174, SOUTH KOREA

     

    • Double-check the postal code against the official address search before shipping.

    Both comma styles appear in English address examples. Follow the official address search result and your shipping provider’s formatting requirements.

    Filling In Online Shopping and Parcel Forms

    Forms differ from site to site, so match the fields to the parts you actually have.

    • Address line 1: building number and road name
    • Address line 2: dong and ho, or the building name
    • District, city, postal code, country: each in its own field if the form has one

    If the form asks for only one line, write the whole address in the order shown above. When there’s a separate country field, select South Korea or Republic of Korea instead of repeating the country in the street address.

    For parcels sent to Korea, Korea Post advises writing addresses in English and in the language of the destination country. That’s its general guidance for international mail.

    Adding the Korean address as well may help local staff read it. Customs rules and fees are a separate topic, so check them with your carrier or Korea Post.

    If you’re shopping from a Korean site like Olive Young and shipping internationally, this same field-matching approach applies at checkout.

    Common Mistakes

    • Writing the city first, as in a Korean address, instead of last.
    • Mixing the road name address and the lot-number address in one line.
    • Dropping the dong or ho number for an apartment.
    • Leaving out the postal code, or copying an old one from a lot-number address.
    • Spelling a name differently from the official English result.

    Frequently Asked Questions

    Should I use the road name address or the lot-number address?

    Use the road name address if you have it. The lot-number system was officially decommissioned on December 31, 2013, though it is still widely used.

    How many digits is a Korean postal code?

    The current examples from Korea Post have five digits, such as 47502 and 03187.

    How do I write 102동 304호 in English?

    The IBS guide gives “102-dong 304-ho” and “102-304.” Other references show “Apt. 102-304” and “Bldg. 102 Unit 304.” Keep the numbers the same as the Korean address.

    Do I need to write Korea at the end?

    If the form has a country field, select South Korea or Republic of Korea. Korea Post’s written sample puts “Rep. of KOREA” at the bottom of the address.

    Can I write the Korean address in Hangul on an English form?

    Some forms accept Hangul and some don’t. For international parcels, Korea Post advises including the address in the destination country’s language alongside English.

    Key points

    • Use the road name address when possible.
    • Korean postal codes have five digits.
    • Keep dong and ho numbers exactly as given.

    Official Sources

    This guide was compiled on October 21, 2026 from the pages listed above under Official Sources. Postal codes and address rules can change, so confirm your Korean address in English on the official tools before you order or ship anything.

    Photo by Mediamodifier on Unsplash

  • Boiler Won’t Turn On in Korea: What to Check Before Calling Service

    Boiler Won’t Turn On in Korea: What to Check Before Calling Service

    If your boiler won’t turn on, start by looking at the room thermostat on your wall. Before calling a repair line, there are a few simple things worth checking on your own.

    This guide walks through a few basic checks. None of them require opening the boiler. If something feels off at any point, stop and call a professional instead.

    Boiler Won’t Turn On? Start With the Thermostat and Plug

    The first thing to check is the thermostat screen. See whether it’s completely dark, and separately, whether the boiler unit itself is still running or making any sound. A dark thermostat does not always mean the whole boiler is off — sometimes it’s just the display panel.

    Next, look at the power plug if your boiler has one you can reach. Check that it’s pushed firmly into the outlet.

    • If the plug or outlet shows burn marks, moisture, or a burning smell, do not touch it.
    • Ask a professional to look at it instead.
    • If everything looks normal, move on to the breaker.

    Check the Breaker and Outlet Before Calling Anyone

    Go to your home’s breaker panel and look for the switch connected to the boiler. Check whether the breaker has tripped.

    If it keeps tripping, don’t keep resetting it. Contact an electrician.

    If the outlet itself looks fine, try plugging in a small, safe appliance to test it.

    • If that small appliance doesn’t work either, the problem may be the outlet or the electricity supply to that line.
    • If the appliance works fine but the boiler still won’t turn on, the unit itself likely needs inspection.
    • Either way, this is the point where calling for service makes sense.

    One more thing: don’t open or take apart the boiler yourself, even if you feel confident. Readers who want to understand how the heating system is supposed to work day to day might find How to Use Korean Ondol Floor Heating: The Boiler Panel Explained useful as background.

    What Your Symptoms Might Mean

    Here’s a simple way to read what you’re seeing, written cautiously since only a technician can confirm the actual cause.

    Situation What it suggests Next step
    No power at all (thermostat and unit both dark) Could be the plug, outlet, or breaker Work through the plug, breaker, and outlet checks above
    Power on but not heating May be an issue with the unit itself rather than power supply Contact your boiler brand’s support line for inspection

    Related Boiler Troubleshooting Guides

    Boiler has power but shows an error code?
    Check the meaning of your error code by brand and model.
    Korean Boiler Error Codes: Navien, Kiturami, Rinnai & Daesung

    Boiler is on, but there’s no hot water?
    Follow these checks to identify possible hot water problems.
    No Hot Water in a Korean Apartment? 5 Things to Check First

    Water or heating stopped during freezing weather?
    Check whether frozen pipes could be causing the problem.
    Frozen Pipes in Korea: No Water or Heat? What to Do

    When Not to Check It Yourself

    Some signs mean you should stop checking anything and act immediately. If you smell gas, don’t operate any electrical switches.

    • Don’t use a lighter or any flame.
    • Get everyone out of the space right away.
    • Once you’re outside and safe, contact your gas supplier, or call 119, Korea’s fire and emergency number.

    Burn marks, moisture, or a burning smell at a plug or outlet are also a stop sign. In that case, skip the remaining checks entirely and call a professional instead of continuing on your own.

    Who to Call: Boiler Brand Support Lines in Korea

    Look at the boiler unit or the thermostat for a printed brand name — this tells you which line to call. These are all Korean-language phone lines, and the official websites are in Korean too.

    If you don’t speak Korean, it may help to have a Korean-speaking friend, coworker, or landlord nearby when you call.

    Brand Phone Notes
    Kyungdong Navien (경동나비엔) 1588-1144 Support line operates 365 days, 24 hours, per the official page. The Korean site (navienhouse.com/support) has A/S request, self-diagnosis, 1:1 inquiry, live chat, and branch-finder menus.
    Kiturami (귀뚜라미) 1588-9000 A self-diagnosis page is available on the Korean site at krb.co.kr/self.
    Rinnai Korea (린나이) 1544-3651 The Korean support page notes that visits are a paid service, and advises calling ahead before a visit.
    Daesung Celtic (대성쎌틱) 1588-8577 Hours are 9:00 to 18:00, with a lunch break from 12:00 to 13:00. The FAQ page is at celtic.co.kr, and a KakaoTalk chat channel is also offered.

    Before You Call: A Quick Checklist

    Having a few details ready can make the call easier, especially if you need help translating.

    • The brand name printed on the unit or thermostat.
    • The model name, also usually printed on the unit.
    • When the problem started, as specifically as you can recall.
    • Which of the checks above you’ve already tried.
    • Whether you noticed any gas smell, burn marks, or moisture anywhere near the boiler.

    This guide reflects information checked from official brand support pages as of October 15, 2026. Service hours, phone numbers, and site details can change, so it’s worth confirming the latest information directly on each brand’s official support page before you call.

    Photo by Erik Mclean on Unsplash

  • Preventing Frozen Pipes in Korea: A Winter Checklist for Renters

    Preventing Frozen Pipes in Korea: A Winter Checklist for Renters

    Your first Korean winter as a renter can catch you off guard, especially the morning you turn on the tap and nothing comes out. Frozen pipes in Korea are a winter risk worth preparing for, and knowing the basics before the cold really sets in saves a lot of stress later.

    Most of this comes down to a few habits and a bit of insulation. None of it is complicated, but it helps to know the Korean terms, since that’s what you’ll see on signs, in building notices, or when you talk to your landlord.

    What Causes Frozen Pipes in Korea

    Koreans call this problem dongpa (동파), which refers to water pipes freezing and sometimes bursting. It happens when the water in a pipe gets cold enough to freeze.

    Frozen pipes can occur even when temperatures are above -5°C. According to Seoul City’s guidance, the risk becomes more serious when temperatures remain below -10°C for two days or longer.

    Treat these numbers as general guidance rather than a strict rule. Always pay attention to local cold-wave warnings for your area.

    • Dongpa (동파) means pipes freezing, and sometimes bursting
    • Freezing can occur even above -5°C, and the risk becomes more serious after two days or longer below -10°C
    • Follow local cold-wave warnings

    Where Frozen Pipes in Korea Usually Start

    Frozen pipes in Korea tend to start wherever water sits exposed to outside air. These tend to be parts of a building that get little indoor heat.

    Not every home has all of these features. Walk around your own building once and see which of these actually apply to you.

    • Gyeryanggi-ham (계량기함), the water meter box
    • Outdoor water pipes
    • The washing machine’s water supply pipe
    • Boiler pipes

    A Practical Winter Checklist

    Once you know where the risk sits, the fixes are mostly about insulation and a couple of daily habits. Here’s a simple checklist to work through before a cold wave hits.

    What What to do
    Water meter box (계량기함) Fill the empty space inside with old clothes, bubble wrap, or styrofoam. Seal the lid and any gaps with plastic or tape.
    Exposed pipes Wrap outdoor water pipes, washing machine pipes, and boiler pipes with insulation material.
    During a cold wave Open the tap slightly so water flows in a thin, continuous stream.
    Going out for a long time Don’t switch the boiler off completely. Keep the power connected and lower the indoor temperature instead.

    Don’t turn off the boiler completely during freezing weather. Keep the power connected and lower the indoor temperature when you go out, following your boiler manufacturer’s instructions. Freeze-protection features vary by model.

    If you’re not sure how your boiler panel works, our ondol floor heating guide walks through the buttons and settings in detail.

    If a Pipe Freezes or Bursts Anyway

    Even with every precaution, pipes can still freeze during a hard cold snap. Knowing the first few steps keeps a bad situation from getting worse.

    • If a pipe bursts or starts leaking, turn off the water supply if you can do so safely. Never force a frozen valve.
    • If a pipe or water meter freezes, follow the official guidance for the affected part. Avoid open flames, boiling water, and electrical heating devices near wet areas.
    • If you notice cracks or leaks, contact your landlord or building management office. You can also report it to the local waterworks office.

    As a renter, contact your landlord or building management as soon as you notice a problem. Don’t wait to see if it resolves on its own.

    Every building is set up a little differently, and winter habits that work for one apartment may not fit another. When in doubt, ask your landlord or building management how your specific building handles cold-weather plumbing, and keep that answer somewhere you can find it quickly if a pipe ever freezes.

    For step-by-step guidance when water or heating has already stopped, read our Frozen Pipes in Korea: No Water or Heat? What to Do.

    Sources and References

    Photo by Anna Maria Gnadl on Unsplash

  • How to Use Korean Ondol Floor Heating: The Boiler Panel Explained

    How to Use Korean Ondol Floor Heating: The Boiler Panel Explained

    You walk into your Korean apartment on a cold night, sit down on the floor, and wait. Nothing happens. The floor stays cold, and the little panel by the front door is covered in Korean characters you can’t read yet. This is a common puzzle for newcomers to ondol floor heating, and the good news is that it only takes a few minutes to understand once someone explains it clearly.

    What Is Ondol Floor Heating, Really?

    Ondol is Korea’s traditional underfloor heating method. In modern apartments, a gas or electric boiler heats water, and that hot water circulates through pipes running under the floor.

    Instead of warming the air like a radiator does, the floor itself becomes warm and heats the room from the ground up. In everyday conversation, Koreans often just use the word “ondol” to mean home heating in general, even though the actual system is boiler-based.

    The same boiler usually does double duty: it heats the floor and also supplies hot water for your shower and sink. Both functions are controlled from one wall panel, typically placed near the front door or somewhere in the hallway.

    • Ondol heats the floor directly, not the air
    • One boiler often handles both floor heating and hot water
    • The control panel is usually near the entrance or hallway
    • Most panels are labeled only in Korean

    Decoding the Ondol Floor Heating Panel

    Every panel looks a little different, but several button names show up again and again. Learning these few words clears up much of the confusion.

    Korean Romanization What it usually means
    전원 jeonwon Power on/off
    난방 nanbang Heating. On some panels this sets room temperature, on others it sets the floor pipe water temperature
    온수 onsu Hot water for showers and taps
    외출 oechul Away mode
    예약 yeyak Schedule or timer
    난방끔 nanbang-kkeum Turns off floor heating only, while the system stays powered on. Not every panel has this button

    Panel layouts and button names can differ between brands, so don’t assume yours matches exactly. If your panel looks different from this list, it’s worth asking your landlord to walk you through it once.

    Away Mode vs. Turning Everything Off

    One detail trips up a lot of newcomers: 외출 (oechul), or away mode, does not shut the boiler down completely. It keeps the system running at a low level, mainly to stop the pipes from freezing and to save energy while you’re out.

    In winter, it’s better to switch to away mode when you leave rather than turning the heating off entirely. Fully powering down the system in cold weather can leave pipes vulnerable.

    • Away mode keeps a low background temperature running
    • It is meant for freeze prevention and energy saving, not full shutdown
    • Use away mode instead of full power-off during winter outings

    Seasonal habits matter too. Many people in Korea choose hot-water-only mode in summer, so the floor doesn’t heat up while they still get hot showers. In winter, they switch to heating plus hot water together.

    Why Is My Floor Cold? A Quick Checklist

    If your floor should be warm but isn’t, work through a short checklist.

    • Check that the panel is actually set to heating, not away mode or hot-water-only
    • Check that the target temperature is set high enough
    • In a rental or guesthouse, the boiler may have been left in away mode between guests, so ask your landlord or host
    • Some apartments allow room-by-room control, so the heating might simply be set for a different room

    Asking your landlord or host directly is often the fastest fix. This kind of quick check applies to plenty of everyday apartment questions in Korea, similar to working out Korean trash sorting rules when you first move in — the system makes sense once someone shows you the local version.

    A classic companion habit in Korean winters is putting bubble wrap on windows. It’s a common way to help keep heat inside the room.

    One Safety Note

    If the boiler panel shows an error message or you smell gas, don’t try to fix it yourself. Contact your landlord or building management right away instead of experimenting with the panel.

    Panels, button layouts, and even house rules around heating can differ from one building to another. When in doubt, your landlord or building management is the best source for how your specific ondol floor heating system works.

    Photo by Nayanika Mukherjee on Unsplash

  • Korean Trash Sorting: A Practical Guide for Foreign Residents

    Korean Trash Sorting: A Practical Guide for Foreign Residents

    You just moved into a new place in Korea, finished unpacking, and now you’re standing over your kitchen trash can wondering what on earth to do with it. Can you just use a regular plastic bag? Where does the chicken bone go? Korean trash sorting trips up almost every new resident at first, but the logic behind it is actually pretty simple once someone walks you through it.

    The Bag Is Not Optional: Understanding Jongnyangje

    Korea has run on a Volume-Based Waste Fee system, known as jongnyangje (종량제), since 1995. The core idea is that you pay for waste disposal by the bag, not through a flat tax.

    In practice, this means general household trash has to go into an official jongnyangje bag (종량제 봉투), sold at convenience stores and supermarkets. You cannot just grab a free plastic bag from a store and toss your trash in it.

    Here’s the part that surprises a lot of foreigners: these bags are specific to your district, called a gu (구) in Korean. A bag bought in one district will not be accepted in another, even one right next door.

    • Buy jongnyangje bags locally, ideally near where you live
    • Check the size options, since bags usually come in a few different volumes
    • Keep a few on hand so you’re not caught without one on collection day

    If you’re stopping by a nearby convenience store anyway, it’s worth asking staff where the jongnyangje bags for your area are kept.

    The Five Categories of Korean Trash Sorting

    Once you understand the bag system, the next step is learning the categories. Korean trash sorting generally breaks down into five types.

    Category What Goes Here
    General waste Everyday trash that isn’t food or recyclable, in a jongnyangje bag
    Food waste Edible scraps, disposed separately via bin, RFID machine, or food-waste bag
    Recycling Paper, plastic, cans, glass, styrofoam
    Special waste Batteries, fluorescent lamps, small electronics
    Bulky waste Furniture and large appliances, with a disposal sticker or permit

    For recycling, a little prep work matters. Rinse out containers, remove labels and stickers where you can, and flatten boxes before putting them in a clear bag or your building’s labeled bin.

    Dirty or greasy containers can get your whole batch of recycling rejected, so this step isn’t just a nicety. For bulky items like a broken chair or an old refrigerator, you’ll need to buy a disposal sticker or permit through your district office before leaving it out.

    Food Waste: Where Most People Get Korean Trash Sorting Wrong

    Food waste sounds straightforward, but it’s actually one of the trickiest parts of Korean trash sorting. The category is meant for things that can be processed back into animal feed or compost, not just anything that came from your kitchen.

    A surprising number of food-related items actually belong in general waste, not food waste. This catches almost every new resident off guard at least once.

    • Bones of any kind, including chicken, fish, or pork bones
    • Shells and eggshells
    • Fruit pits and hard seeds
    • Coffee grounds and used tea bags

    All of these go into your general waste jongnyangje bag, not the food waste bin. It feels counterintuitive since they’re technically food, but they don’t break down the way vegetable scraps or rice do.

    Food waste itself is often handled through a dedicated bin, and in many buildings you’ll find an RFID machine that weighs your waste and charges based on that weight. Other buildings rely on designated food-waste bags instead, so check which system your building actually uses.

    Apartments vs. Smaller Buildings: Why Your Experience Will Differ

    Where you live changes how all of this plays out day to day. High-rise apartment complexes tend to have a dedicated recycling and waste area inside the complex itself.

    These areas often allow disposal nearly any time, with separate containers already set up for each category. That setup makes the whole process far more forgiving for beginners, since the categories are physically laid out in front of you.

    Smaller multi-unit buildings and standalone houses work differently. Collection days, bag requirements, and specific rules are set by the local district office, and they vary more from one building to the next.

    In these buildings, trash might only go out on certain days of the week, or get left in a shared spot on the street rather than inside a complex. That means the system you learn from a friend in a different neighborhood might not match your own building at all.

    When the Rules Don’t Match What You Expected

    Because Korean trash sorting rules shift by district and by building type, don’t assume what worked in one apartment applies everywhere. Collection schedules, exact food waste bag requirements, and fees are all set locally.

    Your landlord or building management office is often the fastest source of answers, especially for a new tenant. Many district (gu) office websites also publish local waste rules, sometimes with English information for international residents.

    It’s worth asking these questions in your first week rather than guessing:

    • Where do I buy jongnyangje bags for this specific district?
    • Does this building use an RFID food waste machine or designated bags?
    • What are the collection days for general waste and recycling?
    • Who do I contact for bulky waste disposal, like an old desk or mattress?

    It genuinely feels like a lot in the first month. But once you’ve internalized the five categories and know your building’s quirks, sorting trash becomes a quick, almost automatic habit rather than a weekly puzzle.

    Photo by Otto Freijser on Unsplash